SpaceTime 3.0 - The best calculator for iPhone/iPod Touch

I use iPod as a calculator in my math lessons at school. Since the 2.0 firmware version there is a better calc. Just rotate the iPod to the landscape position and you get loads of functions for solving complex science and math problems. But what I missed was a graph plotter and an equation solver.
A friend of mine announced me, that a version of Spacetime is avalible for iPhone/iPod Touch. I already knew this app, but didn't know that it's portable on iPod.



When you run Spacetime first time, you are welcomed by a very nice tutorial, which describes the work with Spacetime. Tutorial is devided into 9 parts (Basics, Solve Quadratic Equations, Calculus, 2D Graphing, 3D Graphing, Matrices, Custom Functions, Scripting and Scroll Function).

So I'm now able to solve the quadratic equations very quickly, which I need frequently at school. Actually I only have to enter the variables a, b and c, and I get the result immediately, even the equation doesn't have a solution in R numbers. In this case I get two complex roots.

Another feature I noticed is that Spacetime is able to count with the fractions. For instance you want to solve sin(60°) and you get the right answer (√3/2). Or you click to solve again and it is converted to a number (0.866...).

Next thing is the scripting feature. I would like to learn this because scripts really save your time. Maybe I'll write an article about scripting in Spacetime in the future.

Link to the official Spacetime website.

Anther screenshots: